Grandstream Networks GXV Series, Overview

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IP VIDEO ENCODERS
IP video encoders are like analog telephone adapters for standard analog video surveillance
cameras, converting the analog signal and preparing it for IP transmission. If you have invested in
analog cameras and don’t want to replace them, IP video encoders are a cost-effective option that
allows you take advantage of IP without sacrificing any of the functionality your analog cameras
already provide.
Grandstream offers two models of IP video encoder. The GXV3501
is a single channel encoder supporting full D1 resolution.
The GXV3504 is a four channel encoder that supports either four
ports CIF resolution at full rate, or two ports D1 resolution and 2
ports CIF.
Both models offer full PTZ control (subject to the capabilities of your
analog camera), integrated Power over Ethernet, video watermarks,
and a 24MB alarm buffer with event trigger for email / FTP
notification.